"Studies on Chromosomes. I. The Behavior of the Idiochromosomes in Hemiptera." Reprinted from the Journal of Experimental Zoology, Vol. II, No. 3, August 1905, pp. 371-405.

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Pp. 371-405; 7 figs. Original wrappers. Very Good. First Edition. With ink stamp "With compliments of/ Edm. B. Wilson/ Columbia University, New York" on front wrapper. With the ink stamp "From Library of D. T. MacDougal" on front wrapper. The footnote on the first page reads: "This paper is based on a study of some very fine series of sections of the testes of certain Hemiptera, prepared six or eight years ago by Dr. F. C. Paulmier, in connection with his valuable paper on the spermatogenesis of Anasa tristis ('99). Part of the original Anasa sections, with a number of series of the testes of some other insects, were given to the cytological cabinet of the Columbia laboratory at that time; some of the best of the remainder were subsequently loaned to Mr. Sutton, and others to Dr. Dublin, for comparison with their work on the spermatogenesis of other forms. Certain inconsistencies in the literature relating to the accessory chromosome and the microchromosomes or "chromatin-nucleoli" led me to re-examine the preparations of Anasa and some of the other genera, which yielded some new and interesting conclusions in the case of Anasa, and also of Alydus, Lygaeus and Coenus. Dr. Paulmier being preoccupied with other lines of work did not find it practicable again to take up his cytological studies, and he was generous enough to give me, for the laboratory, his entire set of preparations, comprising, in addition, to the slides already given or loaned, serial sections of more than a hundred testes representing upward of twenty genera of Hemiptera and other insects. . . . Much of this material is admirably fixed, sectioned and stained, and the best preparations are a model of technical excellence, showing especially the chromosomes of the spermatogonial and spermatocyte divisions with a clearness and brilliancy comparable with that of the best Ascaris preparations. . . . I am much indebted to Dr. Paulmier's generosity in placing at my disposal this valuable material, to which I have since added many new preparations of my own.". N° de ref. del artículo 16951

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